The surprising condition that causes 1 in 5 deaths—worldwide.
More people die from sepsis than cancer. |
GUEST BLOG / By Rachael Rettner, senior writer, LiveScience.com--The number
of deaths from sepsis worldwide is much higher than previously thought, with an
estimated 20% of people dying from the life-threatening condition, according to
a new study.
The study, published today
(Jan. 16) in the journal The Lancet,
estimated that in 2017, 49 million people developed sepsis and 11 million died
from the illness. That's more than double the number of deaths previously
estimated. (A recent study estimated only 5 million deaths from sepsis
globally.) It's also more than the number of deaths from cancer, which kills an
estimated 9.6 million people each year, according to the World Health
Organization.
More than half of the sepsis
cases in 2017 occurred among children, many of whom were newborns, the authors
said.
"We are alarmed to find
sepsis deaths are much higher than previously estimated, especially as the
condition is both preventable and treatable," study senior author Dr.
Mohsen Naghavi, a professor of health metrics sciences at the University of
Washington's Institute for Health Metrics and Evaluation, said in a statement.
"We need renewed focus on sepsis prevention among newborns and on tackling
antimicrobial resistance, an important driver of the condition."
Sepsis is an
"extreme" immune response to an infection, according to the Centers
for Disease Control and Prevention (CDC). It happens when an existing infection
— such as a skin, lung or urinary tract infection — triggers a "chain
reaction" in the body that leads to widespread inflammation, according to
the CDC.
This inflammation can lead to
blood clots and leaky blood vessels, which in turn cause poor blood flow,
according to the National Institutes of Health. In severe cases, sepsis can
lead to organ failure and life-threatening drops in blood pressure.
Many previous estimates of
sepsis cases and deaths looked at only middle- and high-income countries, and
considered only individuals who were admitted to the hospital. The new study
used data from millions of deaths and medical records around the world to
estimate sepsis cases and deaths across 195 countries.
Some of the most common
underlying causes of sepsis in the study were diarrheal disease, respiratory
infections and maternal disorders (such as infections after childbirth.)
Many cases of sepsis,
particularly in developing countries, could be prevented with increased access
to vaccines (to reduce infection risk), improved sanitation and adequate
nutrition for children and mothers, said study lead author Dr. Kristina E.
Rudd, an assistant professor in the University of Pittsburgh's Department of
Critical Care Medicine. High-income countries also need to do a better job at
preventing hospital-acquired infections as well as chronic diseases that can make
people more susceptible to infections, she said.
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